CN209802557U - motor internal friction resistance detection alarm device - Google Patents
motor internal friction resistance detection alarm device Download PDFInfo
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- CN209802557U CN209802557U CN201920867320.5U CN201920867320U CN209802557U CN 209802557 U CN209802557 U CN 209802557U CN 201920867320 U CN201920867320 U CN 201920867320U CN 209802557 U CN209802557 U CN 209802557U
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- friction resistance
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Abstract
the utility model relates to a motor internal friction resistance detection alarm device, belonging to the technical field of motor detection, and the key point of the technical proposal is that the device comprises a speed relay, a current relay and an audible and visual alarm; the speed relay is controlled by a normally open speed switch, and the current relay is controlled by a normally open current switch; the audible and visual alarm is respectively connected with the normally open current switch and the normally open speed switch in series; the speed relay detects the rotating speed of the output shaft of the detected motor, and when the rotating speed of the output shaft of the detected motor is lower than a set speed, the normally open speed switch is closed; the current relay detects the flowing current, and when the flowing current is larger than a set value, the normally open current switch is closed; the problems that the manual experience is adopted to detect the friction resistance inside the motor, the labor is consumed, and the working efficiency is low are solved; the friction resistance to the inside of the motor that can be convenient and fast detects, and the inside friction resistance of motor when unusual appears indicates to the external world.
Description
Technical Field
The utility model belongs to the technical field of the motor detects technique and specifically relates to a motor inside frictional resistance detects alarm device is related to.
Background
The motor is a driving part commonly used in production and is widely applied to aspects of production and life. During the operation of the motor, the rotor of the motor has certain rotation resistance. After the motor runs in time, due to external vibration, internal abrasion of the stator and the rotor and the like, the friction resistance of the inner part of the rotor of the motor is increased, the noise of the motor is increased, the rotating speed of the motor is reduced, the flowing current of the motor is increased, and the production requirement cannot be met. Therefore, when the frictional resistance in the motor is abnormal, the motor needs to be overhauled in time.
The conventional method for detecting the friction resistance inside the motor mainly detects the noise and the rotating speed of the motor through workers, and then judges whether the friction resistance inside the motor is normal or not according to experience; the manual experience is adopted to detect the friction resistance inside the motor, the labor is consumed, and the working efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a motor internal friction resistance detects alarm device, can convenient and fast detect the inside frictional resistance of motor, to the external suggestion when unusual appearing in the inside frictional resistance of motor.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a kind of detection alarm device of the internal friction resistance of electrical machinery, including setting up the speed relay on the output shaft of electrical machinery under test and current relay in series with electrical machinery under test; the speed relay is controlled by a normally open speed switch, and the current relay is controlled by a normally open current switch; the friction resistance detection alarm device in the tested motor also comprises an audible and visual alarm which is respectively connected with the normally open current switch and the normally open speed switch in series; the speed relay detects the rotating speed of the output shaft of the tested motor, and when the rotating speed of the output shaft of the tested motor is lower than a set speed, the normally open speed switch is closed; the current relay detects the flowing current, and when the flowing current is larger than a set value, the normally open current switch is closed.
Through adopting above-mentioned technical scheme, when the frictional resistance increase of being surveyed the motor, the rotational speed of being surveyed the motor can reduce, the electric current of flowing through of being surveyed the motor can increase, and then detect motor output shaft rotational speed through speed relay, detect the electric current of flowing through current relay, when being surveyed the inside frictional resistance increase of motor, it is closed to normally opening speed switch through speed relay control, it is closed to normally opening current switch through current relay, thereby audible-visual annunciator switches on, outside audible-visual annunciator sends audible-visual annunciator, thereby indicate the staff.
The utility model discloses further set up to: the photoelectric detection tag is fixed on the peripheral surface of an output shaft of the motor to be detected, and the photoelectric velocimeter is arranged at one end of the output shaft of the motor to be detected; the detection direction of the photoelectric velocimeter is arranged along the radial direction of the output shaft of the motor to be detected, and the probe of the photoelectric velocimeter faces the output shaft of the motor to be detected.
through adopting above-mentioned technical scheme, through being fixed with the photoelectric detection label on the output shaft of being surveyed the motor, and then test the output shaft rotational speed of being surveyed the motor through the photoelectric speed tester to rotational speed that can convenient and fast monitors and look over.
The utility model discloses further set up to: the device also comprises an installation mechanism, wherein the installation mechanism comprises a hoop component detachably connected with the machine body of the tested motor and an installation rod axially arranged along the output shaft of the tested motor in the length direction; the photoelectric velocimeter is fixed at one end of the installation rod close to the output shaft of the tested motor, and the other end of the installation rod is fixedly connected with the clamp component.
Through adopting above-mentioned technical scheme, carry out relatively fixed with the organism of photoelectric speed meter and measured motor through the clamp subassembly, and then conveniently use the photoelectric speed meter to detect the rotational speed of measured motor.
The utility model discloses further set up to: the clamp subassembly includes two clamp spare, construction bolt and mounting nut, the clamp spare includes the clamp main part of cross section C style of calligraphy and is located the mounting panel of clamp main part opening both sides, the terminal surface of mounting panel is provided with the mounting hole that runs through the mounting panel, the construction bolt axial runs through the mounting hole, mounting nut and construction bolt thread engagement and with the terminal surface butt of mounting panel.
Through adopting above-mentioned technical scheme, will link to each other with two clamp spare of the organism joint of being surveyed the motor through construction bolt, mounting nut, and then convenient and fast carries out relative connection with photoelectric speed meter and being surveyed the motor and fix to through the construction bolt of changing different length, can adapt to not unidimensional being surveyed the motor.
The utility model discloses further set up to: the clamp is characterized in that a connecting screw hole is formed in the end face, close to one end of the installation rod, of the clamp main body, connecting threads are arranged on the circumferential face, close to one end of the clamp main body, of the installation rod, and the connecting threads are meshed with the connecting screw hole in a threaded mode.
Through adopting above-mentioned technical scheme, installation pole and clamp main part adopt threaded connection, and then can be through changing the connection length of installation pole and clamp main part, and then adjust the axial position of photoelectric speed measuring appearance at the measured motor output shaft, and then measure the speed to the measured motor better.
The utility model discloses further set up to: a connecting block is fixed at one end of the mounting rod close to the output shaft of the tested motor, and a slot for inserting the photoelectric velocimeter is formed in the end surface of one side of the connecting block close to the output shaft of the tested motor; one side of connecting block is provided with the set screw who runs through the slot lateral wall and with the electro-optical velocimeter butt, set screw and connecting block threaded connection.
through adopting above-mentioned technical scheme, there is the connecting block through the end fixing at the installation pole to set up the slot on the connecting block, through inserting the photoelectric speed tester in the slot, and then fix a position through the photoelectric speed tester, and then fix the photoelectric speed tester through fixing bolt, thereby can convenient and fast install fixedly to the photoelectric speed tester.
The utility model discloses further set up to: a positioning shaft is arranged on the end face, close to the output shaft of the tested motor, of the mounting rod, a positioning hole axially penetrated by the positioning shaft is arranged at one end, close to the mounting rod, of the connecting block, and the connecting block is rotatably connected with the positioning shaft around the axis of the positioning shaft; the positioning shaft is provided with a positioning thread part on the circumferential surface, and the side surface of the connecting block is abutted with a positioning nut in threaded engagement with the positioning thread part.
Through adopting above-mentioned technical scheme, the connecting block passes through the cooperation of locating hole and location axle, and then loosens set nut, can rotate the connecting block, and then can adjust photoelectric speed meter's detection direction, makes photoelectric speed meter more accurate to the rotational speed control of being surveyed the motor.
To sum up, the utility model discloses a beneficial technological effect does:
1. When the friction resistance of the tested motor is increased, the rotating speed of the tested motor is reduced, the flowing current of the tested motor is increased, the rotating speed of an output shaft of the motor is detected through a speed relay, the flowing current is detected through a current relay, when the friction resistance inside the tested motor is increased, a normally open speed switch is controlled to be closed through the speed relay, the normally open current switch is closed through the current relay, and therefore an audible and visual alarm is conducted and sends an audible and visual alarm signal to the outside, and therefore workers are prompted;
2. The two hoop members clamped with the machine body of the tested motor are connected through the mounting bolts and the mounting nuts, so that the photoelectric velocimeter and the tested motor can be conveniently and quickly connected and fixed relatively, and the mounting bolts with different lengths can be replaced to adapt to the tested motors with different sizes;
3. The installation pole adopts threaded connection with the clamp main part to the installation pole can rotate the connecting block through the cooperation of locating hole on location axle and the connecting block, and then can adjust the axial position and the detection orientation of photoelectric speed measuring instrument at the quilt survey with the motor.
Drawings
FIG. 1 is a schematic structural diagram of a friction force detection alarm device inside a motor;
FIG. 2 is a control circuit diagram of the audible and visual alarm;
FIG. 3 is a schematic view of the clip assembly;
FIG. 4 is a view showing the structure of the mounting of the connecting block and the mounting rod;
Fig. 5 is a structural view of the installation of the photoelectric velocimeter and the connection block.
In the figure, 1, a speed relay; 11. a normally open speed switch; 2. a current relay; 21. a normally open current switch; 3. a photoelectric detection label; 4. a photoelectric velocimeter; 5. an installation mechanism; 51. a clamp assembly; 511. a clamp member; 5111. a clamp main body; 5112. mounting a plate; 5113. mounting holes; 5114. a connecting screw hole; 512. installing a bolt; 513. mounting a nut; 52. mounting a rod; 521. connecting threads; 522. positioning the shaft; 5221. positioning the threaded portion; 53. connecting blocks; 531. a slot; 532. a set screw; 533. positioning holes; 54. positioning a nut; 6. an audible and visual alarm.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A friction resistance detection alarm device in a motor refers to fig. 1 and 2 and comprises a speed relay 1, a current relay 2 and an audible and visual alarm 6. The speed relay 1 is arranged on an output shaft of the tested motor and used for detecting the rotating speed of the output shaft of the tested motor, and the current relay 2 is connected with the tested motor in series and used for detecting the current flowing through the tested motor. When the frictional resistance of the motor to be detected is increased, the rotating speed of the motor to be detected is reduced, the flowing current of the motor to be detected is increased, and then whether the frictional resistance of the motor to be detected is normally detected by the speed relay 1 and the current relay 2.
Referring to fig. 1 and 2, a speed relay 1 controls a normally open speed switch 11, and a current relay 2 controls a normally open current switch 21. The audible and visual alarm 6 is respectively connected with the normally open current switch 21 and the normally open speed switch 11 in series; the speed relay 1 detects the rotating speed of the output shaft of the detected motor, and when the rotating speed of the output shaft of the detected motor is lower than a set speed, the normally open speed switch 11 is closed; the current relay 2 detects the flowing current, and when the flowing current is larger than a set value, the normally open current switch 21 is closed. When the friction resistance of the tested motor is increased, the normally-open speed switch 11 and the normally-open current switch 21 are closed, the audible and visual alarm 6 is switched on, and an audible and visual alarm signal is sent to the outside, so that the worker is prompted that the current internal friction resistance of the tested motor fails.
Referring to fig. 1 and 2, the device for detecting and alarming the frictional resistance inside the motor further comprises a photoelectric detection label 3, a photoelectric velocimeter 4 and an installation mechanism 5 for relatively fixing the photoelectric velocimeter 4 and the motor to be detected. The photoelectric detection label 3 is fixed on the peripheral surface of the output shaft of the tested motor. The photoelectric velocimeter 4 is arranged at one end of an output shaft of the tested motor; the detection direction of the photoelectric velocimeter 4 is arranged along the radial direction of the output shaft of the motor to be detected, and the probe of the photoelectric velocimeter 4 faces the output shaft of the motor to be detected. The rotating speed of the output shaft of the tested motor is detected through the photoelectric velocimeter 4, and then a worker can monitor the rotating speed of the current tested motor visually.
Referring to fig. 1 and 3, the mounting mechanism 5 includes a clip assembly 51, a mounting rod 52, and a connecting block 53. The clamp assembly 51 is used for connecting and fixing with the body of the tested motor. The clip assembly 51 includes two clip members 511, a mounting bolt 512, and a mounting nut 513. The clamp member 511 includes a clamp body 5111 having a C-shaped cross section and mounting plates 5112 located on both sides of an opening of the clamp body 5111, wherein a mounting hole 5113 penetrating the mounting plate 5112 is provided on an end surface of the mounting plate 5112, the mounting bolt 512 axially penetrates the mounting hole 5113, and the mounting nut 513 is threadedly engaged with the mounting bolt 512 and abuts against the end surface of the mounting plate 5112. Through adjusting the mounting bolt 512, the motor testing device can adapt to tested motors with different scales and is convenient to mount. The mounting rod 52 is arranged along the axial direction of the output shaft of the tested motor, the connecting block 53 is fixed at one end of the mounting rod 52 close to the output shaft of the tested motor, and the photoelectric velocimeter 4 is fixed on the connecting block 53.
referring to fig. 3 and 4, a coupling screw hole 5114 is formed on an end surface of the clamp body 5111 adjacent to one end of the mounting rod 52, a coupling screw 521 is formed on an end surface of the mounting rod 52 adjacent to the clamp body 5111, and the coupling screw 521 is threadedly engaged with the coupling screw hole 5114. By changing the connection length of the installation rod 52 and the clamp body 5111, the axial position of the photoelectric velocimeter 4 relative to the output shaft of the motor to be measured can be adjusted, and the photoelectric velocimeter 4 is convenient to use to detect the rotation speed of the output shaft of the motor.
Referring to fig. 4, a positioning shaft 522 is arranged on the end surface of the mounting rod 52 close to the output shaft of the motor to be measured, a positioning hole 533 axially penetrated by the positioning shaft 522 is arranged at one end of the connecting block 53 close to the mounting rod 52, and the connecting block 53 is rotatably connected with the positioning shaft 522 around the axis of the positioning shaft 522; the positioning shaft 522 has a positioning screw portion 5221 on the circumferential surface thereof, and the side surface of the connecting block 53 abuts against the positioning nut 54 threadedly engaged with the positioning screw portion 5221. The connecting block 53 is installed and positioned through the matching of the positioning hole 533 and the positioning shaft 522, and then the positioning nut 54 is loosened, the connecting block 53 can be rotated around the axis of the positioning shaft 522, so that the detection direction of the photoelectric speed measuring instrument 4 can be adjusted by the worker conveniently, and further the rotation speed of the output shaft of the motor can be better adjusted.
Referring to fig. 5, a slot 531 for inserting the photoelectric velocimeter 4 is formed on the end surface of one side of the connecting block 53 close to the output shaft of the tested motor; one side of the connecting block 53 is provided with a fixing screw 532 which penetrates through the side wall of the slot 531 and is abutted against the photoelectric velocimeter 4, and the fixing screw 532 is in threaded connection with the connecting block 53. Through the setting of slot 531, and then can convenient and fast install photoelectric speed meter 4 fixed, and then detect the output shaft rotational speed of being surveyed the motor.
The implementation principle of the embodiment is as follows:
The rotating speed of the output shaft of the tested motor is detected through the speed relay 1, and when the rotating speed of the output shaft of the tested motor is lower than a set speed, the normally open speed switch 11 is closed. The flowing current is detected by the current relay 2, and when the flowing current is larger than a set value, the normally open current switch 21 is closed. When the friction resistance of the tested motor is increased, the normally-open speed switch 11 and the normally-open current switch 21 are closed, the audible and visual alarm 6 is switched on, and an audible and visual alarm signal is sent to the outside, so that the worker is prompted that the current internal friction resistance of the tested motor fails. The output shaft rotating speed of the tested motor is detected through the photoelectric velocimeter 4, and then the rotating speed of the tested motor is visually checked by a worker conveniently.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides an inside frictional resistance detection alarm device of motor which characterized in that: the device comprises a speed relay (1) arranged on an output shaft of a tested motor and a current relay (2) connected with the tested motor in series; the speed relay (1) is controlled by a normally open speed switch (11), and the current relay (2) is controlled by a normally open current switch (21); the friction resistance detection alarm device in the tested motor further comprises an audible and visual alarm (6), and the audible and visual alarm (6) is respectively connected with the normally-open current switch (21) and the normally-open speed switch (11) in series; the speed relay (1) detects the rotating speed of the output shaft of the tested motor, and when the rotating speed of the output shaft of the tested motor is lower than a set speed, the normally open speed switch (11) is closed; the current relay (2) detects the flowing current, and when the flowing current is larger than a set value, the normally open current switch (21) is closed.
2. The motor internal friction resistance detection alarm device according to claim 1, characterized in that: the device is characterized by further comprising a photoelectric detection label (3) and a photoelectric velocimeter (4), wherein the photoelectric detection label (3) is fixed on the peripheral surface of an output shaft of the motor to be detected, and the photoelectric velocimeter (4) is arranged at one end of the output shaft of the motor to be detected; the detection direction of the photoelectric velocimeter (4) is arranged along the radial direction of the output shaft of the motor to be detected, and the probe of the photoelectric velocimeter (4) faces the output shaft of the motor to be detected.
3. The motor internal friction resistance detection alarm device according to claim 2, characterized in that: the device is characterized by also comprising an installation mechanism (5), wherein the installation mechanism (5) comprises a hoop component (51) detachably connected with the machine body of the tested motor and an installation rod (52) arranged along the axial direction of the output shaft of the tested motor in the length direction; the photoelectric velocimeter (4) is fixed at one end of the installation rod (52) close to the output shaft of the tested motor, and the other end of the installation rod (52) is fixedly connected with the hoop component (51).
4. the motor internal friction resistance detection alarm device according to claim 3, characterized in that: hoop subassembly (51) include two hoop spare (511), construction bolt (512) and construction nut (513), hoop spare (511) include the hoop main part (5111) of cross section C style of calligraphy and are located mounting panel (5112) of hoop main part (5111) opening both sides, the terminal surface of mounting panel (5112) is provided with mounting hole (5113) that runs through mounting panel (5112), construction bolt (512) axial runs through mounting hole (5113), construction nut (513) and construction bolt (512) thread engagement and with the terminal surface butt of mounting panel (5112).
5. the motor internal friction resistance detection alarm device according to claim 4, characterized in that: the clamp is characterized in that a connecting screw hole (5114) is formed in the end face, close to one end of the mounting rod (52), of the clamp main body (5111), connecting threads (521) are formed in the circumferential face, close to one end of the clamp main body (5111), of the mounting rod (52), and the connecting threads (521) are in threaded engagement with the connecting screw hole (5114).
6. The motor internal friction resistance detection alarm device according to claim 5, characterized in that: a connecting block (53) is fixed at one end of the mounting rod (52) close to the output shaft of the tested motor, and a slot (531) for inserting the photoelectric velocimeter (4) is formed in the end face of one side of the connecting block (53) close to the output shaft of the tested motor; one side of connecting block (53) is provided with through slot (531) lateral wall and with set screw (532) of photoelectricity tachymeter (4) butt, set screw (532) and connecting block (53) threaded connection.
7. The motor internal friction resistance detection alarm device according to claim 6, characterized in that: a positioning shaft (522) is arranged on the end face, close to the output shaft of the motor to be measured, of the mounting rod (52), a positioning hole (533) axially penetrated by the positioning shaft (522) is arranged at one end, close to the mounting rod (52), of the connecting block (53), and the connecting block (53) is rotatably connected with the positioning shaft (522) around the axis of the positioning shaft (522); the positioning shaft (522) is provided with a positioning thread part (5221) on the circumferential surface, and the side surface of the connecting block (53) is abutted with a positioning nut (54) in threaded engagement with the positioning thread part (5221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920867320.5U CN209802557U (en) | 2019-06-10 | 2019-06-10 | motor internal friction resistance detection alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920867320.5U CN209802557U (en) | 2019-06-10 | 2019-06-10 | motor internal friction resistance detection alarm device |
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| Publication Number | Publication Date |
|---|---|
| CN209802557U true CN209802557U (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920867320.5U Active CN209802557U (en) | 2019-06-10 | 2019-06-10 | motor internal friction resistance detection alarm device |
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| CN (1) | CN209802557U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115900822A (en) * | 2022-11-25 | 2023-04-04 | 湖南电气职业技术学院 | Test system applied to servo motor |
-
2019
- 2019-06-10 CN CN201920867320.5U patent/CN209802557U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115900822A (en) * | 2022-11-25 | 2023-04-04 | 湖南电气职业技术学院 | Test system applied to servo motor |
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